ABB RELION 620 Series Technical Manual page 395

1MRS757644 F
620 series
Technical Manual
Iosin(φ) criterion selected, forward-type fault
=> FAULT_DIR = 1
GUID-560EFC3C-34BF-4852-BF8C-E3A2A7750275 V2 EN
Figure 187: Operating characteristic Iosin(φ) in forward fault
The operating sector is limited by angle correction, that is, the operating sector is 180
degrees - 2*(angle correction).
Example 2.
Iosin(φ) criterion selected, reverse-type fault
=> FAULT_DIR = 2
Section 4
Protection functions
389